The video above shows you how to make this work, but the process is simple: just stick a little duct tape to the stuck-on lid, leave yourself enough extra tape to act as a pull-handle, and pull on the tape to twist the lid off. As long as the glue holds, you can tighten that lid back up as much as you want and have a quick and simple way to open the jar again. If you need a step-by-step, or just don't believe your eyes, hit the link below for more detail.